The Sigma Mixer, also known as a Dough Mixer, is a heavy-duty industrial mixer specifically designed for kneading, mixing, and homogenizing highly viscous materials, pastes, and dough-like substances. It features a horizontal U-shaped trough with two counter-rotating sigma-shaped blades that provide powerful shearing and folding action for efficient and thorough mixing.

This mixer is ideally suited for processing sticky, semi-solid, or high-viscosity materials commonly found in the pharmaceutical, food, rubber, chemicals, adhesives, and plastic industries.